Railroad tie



' RAILROAD TIE Filed NOV. 25. 1930 14 2 15 n 7 n 1 1 11 H60 FIGURE 4- 8 5/ *I \3 MI5 13 IZ Il/ I `I1 I i qa :l I l?" l"-1-- :g l' A H l l ll Il I I I l /1 6/ u. I l .A I l I I l u l f' F/GUQE 5 i II* I i I l I l I 10 7 INVENTOR l v 5 oa/e/ 81 1?/ Mud/Mw Patented Sept. 29, 193i 'Y UNITED lIPMENTOFFICE i Josnrri n. HoBAiatrf oN emmene; ori?mrsBuiten,` rfieixrirsirnva'NIA4 f Application ledNovember l25, `1980. Serial No. 497,968.

i VThis inventionA relates` to reinforced coiicrete sleepers or railroad ties. I realize .that

broadly; such sleepers are not novelfbut the i objects of myyinvention are directed to cer- 5 Vtain refinements in structure; that. is to say, one objectof my inventionfis to provide a Vconcrete sleeper which has' a metallic rein- 2"() tioned ab.ove,and,withal'are inexpensiveftol construct and vtoxinstall.:",Noticeis hereby given 'of mydivisioiial. application, kSerial YNo. `54.8',515,,ii1eciJuly3,1931.`A .rj @i In the accompanying drawingsfFigure-l a5 is a view in side'elevation ofa sleeper,"em

bodying the invention; Figure@ is'a view ot Vthesame n plan from 'abovejFigure 3l is a fragmentary view f of the. sleeper, to `larger scale, and partly in' side elevation'and partly Soin vertical section gFigurell isa bottom plan viewf'of that portion ofthe sleeper which is shown in Figure 3; and-Figure 5 isa view in cross section, `taken ,onv the planef V`-V offFigure 4.

' 35 VI The sleeper'comprises a`monolithicbody` of an elongate rectangular shape, as indicated in theV drawings; it is formed of concrete and has embedded'in its bodyl a metallic reinforcement.' ,Advantageously, such reinforce- 40 ment includes stripsV 1 of metalfmesh, 'and a plurality of' rods 2.' Each strip 1, in theV plane of its reach,-Jextendsfwith the length and height ofthe body Aytlie severa-l strips are disposedfat 4intervals 'throughout the Y 45 kwidth of the sleeper, and therods2 are located between .the strips 1 in the manner illustrated in Figure ,5.l In VvFigure 4 it will be seen' that there are founrods 2 distributed transversely `of the sleeper. The two inner ,rodsof the four extend adjacent the bottom of, the sleeper, while the two outer rods.. are so bent or shaped with respect to their length that their medial portions lie close to lthetop face of the body A, and their end portions are located near the bottom of such body (see Figure 3). The structural characteristics of EwcuiviiiEi-LLAND,PENNsYLvAN1A, AssIGNoa ro HOLMES B.

these reinforcing members, and their organization ywithin the concreteV bodyy are factors of prime importance in producing the sleeper ofmy inveiitionf-a sleeper which to the bestl of my knowledge has` greater durability and better load-carrying capacity than any concrete sleeper` of hitherto known construction.

-Thel means for securing `the rails (14) to .the-sleeper are of importance, and, although thelusemo `tieplates 4(11), rail-clamps (1.2)` and bolts (13) to this endmay not themselves be new, Il shall describe the improveyments in the structure of my sleeper which are Y gIreater efficiency in the Y use oles 15 extend into 4the bodyl of the sleeper forV the reception of railse-v responsible for of these means.

curing bolts 13. In alignment with each bolt hole 1,5.jisv a recessor well 3, as shown in Figure-5, and within each recess a bolt-securing ynut 5 is positioned. 4The wells .3 are` liant-walled, to prevent the nuts rwhich they Ahouse from turning;` conveniently, the Vwells are; square in cross-section and the nuts 5 which they house, accordingly, are square. It

willbe noted that each nut 5 is located Well within the bodyjA, occupying onlya portion lof itsv associatedrecess 3. The Yremaining portion of the-'recess---theregion4 of the recess rwhich is unoccupied by the nut-is packed withemastic filler 4, or other vsuitable `material which is waterproof and electricallyA nonconductive. The ller is vtightly packed into place, and in eil'ect makes the nut 5 an integral-.part of the sleeper; thereby, the nut 5,

and the threaded shank ot the bolt 13 which is readily screwed into theV nut, are protected from the weather.

'To accommodate the practice of adapting one or both rails 14 to serve as a conductor ing positioning of each insulating plate;l Both plate's`9 'and 11 are provided with Aoriices in, mutual registry with the pair of 'bolt holes in each end of the sleeper. The walls of each bolt hole 15 are covered with an electrical insulation 6; the verticalwalls of each rei-.5:

Vcess are clothed with insulation 8; and the inner "terminal wall of each' recess is provided with insulation 10; To withst-andf-the'pressure 'which is 'effected by the nut 5 in service, each recess includes a washer 7 between the nut 5 and its'insulating member 10. Maniestly, electrical communication between the two rails714 isv prevented, and the lfil-lere, being non-conductive, insulates the bolts 13 andthe rails from the ground. i

Sleepers which are built in accordance with -this's-peciiication are compact and heavy, providing a-more stable track, better rail ali-gnment :and superior ltrack surface. The rail 4clamps 12, obviously, may either be provided with ellipsoidal-holes for Ithe bolts 13 to permit the track to be gauged, or the clamps may be replaced by others which are so -constituted as to allow for such gauging. 1t' may be v"further remarked that the'insulatin-g plates s 9 'may beter-ined of a rubber 'composition,"-or a non-conducting :fibrous material, and, inlo- 'cating'these plates 9 between the tie-*plates "11"a`nd the surface of Vthe sleeper, they (plates 9)? serve as shock absorbers, preventing *acute strains (strains such ast'he rolling oiaat `wheel creates) yfrom being transmitted with vsharp impact to the sleeper. M

l 'c'lai'mlas my invention: f

1. 'A'sleeper comprising a monolithic structurehaving a flat-walled recess extending l`trom its ybottom face and into its body, said Vsleeperincluding a bolt hole which extends inwardfroinlit's topface and 'in axial alignment with said recess, which bolt 'holeterm'ifnates yat the inner terminus of said recess, a

nut which liits the walls of 'such recess'- adjacent its said terminus, said nut filmingV of insufficient depth'to iillthe recess, and the vregionof such recess as is unoccupied 'bysaid nut being `packed with filler, whereby said nut is secured within the bodyoisaid sleeper 'and comprisesa liXed, threaded continuation of saidfbolt hole; Y 2. A sleeper comprising a monolithic struc- *S5 turelhavinga flat-walled recess extend-ing wall surfaces Veof said bolt hole andsaid recess,

from its bottom face and into its body, said sleeper including a bolt hole which extends inwardly from its top face and in axial alignment with said recess, which bolt hole terminates at the inner terminus of said recess, a lining of electrical insulation covering the wall surfaces of said bolt hole and said recess, a nut which fits the insulation-covered walls oit' said recess adjacent its said terminus, said nut being of insufficient depth to lill the recess, and the vregion'of such recess las is unoccupied by said nut being packed with filler, as described.

3. Ink av sleeper comprisi a monolithic structure having ka `flat-Walle recessextend-y ingfr'om "its bottom'face and into its body,

the combination of an insulating plate, a

metal tie-plate resting upon said insulating plate,said sleeper :including a bolt hole which extends inwardly from its top face and in axial alignment with said recess, 4each of said insulatingp-late :and :said tie-plate including 1an orifice inv registry with said bolt hole, a lining of electrical .insulation covering the 9o a nut which fits the :insulation-covered walls Aof `said recess adjacent its .said terminus, said vnut .beingof insui'icient depth to ll the re- 1-cess,and-the region of 'recess as is unoccupied fby said nut being packed with Viller of electrical insulating material, whereby said nut is secured within .the body osaid sleeper :and comprises a fixed, threaded A"con tin-nation offsad bolt hole. v 4. Inv a .sleeper comprising a monolithi ystructure havin'gf a- .flat-walled recess extendingufzrom its bottom face and yinto its body, the combination offa shallowv pocket :inset vfr omxthe aipperiace Aof isaid sleeper, :a plate Volf insulating .material nested .in pocket, 'a metal tie-plate. resting upon said insulating plate., said structure including a bolt. :hole which .extends linward Ifnom rthe 'top vfaceV of' said .structure `'and in :axial alignment with said recess, which fbo'lt hole terminates at the innerf terminus :otffs'aid rrecess, a lining cte-lectrical `:insulation covering the wall surfaces of said bolt hole-andxsaid recess, 'a nut 'which fits the insulationscovened 'Walls `of said recess adjacent its said-terminussaid nut `being fof M5 insuiiicientfdepth :to llwi'ihe recess, and the `region of such :recess as is'funoccupied byfsaid fromits facerand'ftenmi-nates in said recess, a

nut lfittedinsaid recess and in:alignment with the axis'od said bolt fhule, saidnut -being ioff insulcient .depth Ito 'iill the recess, andthe 130 my hand.

JOSEPH N. HOBART. 

